Roller-mill.



PA TENTED SEPT. 24, 1907.

E. S. MOULTON.

ROLLER MILL.

APPLICATION FILED JUNE 30, 1906.

4 SHEETS-SHEET 1.

3 G 3 m n u .No. 866,799. PATENTED SEPT. 24, 1907.

' E. s. MOULTON.

ROLLER MILL.

rum-r1011 FILED mm: 30, 1905.

4 SHEETS-SHEET 2.

Wihwaou PATEDVITED SEPT. 24, 1907.

E. S. MOULTON.

ROLLER MILL.

APPLICATION FILED JUNE so. 1005.

4 SHEBTS-SHBET 3.

l/l/ Ill I 31 wenlog We hwos e Witweooq;

No. 866,799. PATENTED SEPT. 24, 1907.v

E. S. MOULTON.

ROLLER MILL.

APPLIOATION FILED JUNE 30. 1905.

4 SHEETS-SHEET 4.

lnvzhtoz EDGAR S.-MOULTON, OF. CENTRAL CITY, COLORADO.-

, ROLLER-MILL.

Specification of Letters Patent.

application filed June 30,1905. serial No. 267,817.

Patented Sept. 24, 1907.

To all whom it may concern:

Be it known that -I, 'Enesn S. MOULTON, a'citizen of the United States, residing at Central City, "in the county of Gilpin and State of Colorado, have invented certain new and useful Improvements in Roller-Mills;

and'I do hereby declare the following to be afull, cl'ear', and eicact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. V

This invention relates to improvements in mills, and

particularly to a'roller mill for crushing ores.

, Oneof the, objectsof the invention is the improvement of the construction of a mill employing twoindependently supported revoluble members, one surround ing the other and driven at a different speed Another object of the invention is the improvement of the construction of a mill, which is provided'with a grinding drum and an auxiliary wheel, the auxiliary wheel being supported in a peculiar manner and being capable of traveling at a different speed from the grind A further object of the invention is the production of a mechanism composed of a minimum number of parts, and which is comparatively simple and inexpensive to construct.

With these and other objects in view, the invention o e ise t t r n vel s i combinations, and arrangements of parts, as will be hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the claims heretoappended. I

In the drawings: Figure 1 is a vertical, longitudinal,

sectional view of, a mechanism constructed in accordance with my invention. Fig. 2 is a top plan view of the mechanism depicted in Fig. 1. Fig. 3 is a vertical, sectional view taken on line 3, 3, Fig. 1, and looking in the direction of the arrow. Fig. 4 is a fragmentary view, in side elevation, of the mechanism showing the lower and upper casings. Fig. 5 is a fragmentary, sectional view of the mechanism taken on line 5, 5, Fig. 1. Fig. 6 is a view in side elevation of one of the bearing casings and the members positioned therein, which support one end of the shaft carrying the auxiliary wheel.

This mill is constructed of a drum and an auxiliary wheel, 1 and 2, respectively, said drum and wheel being supported entirely independent of each other, and

' do not touch at any point. The principal idea is to have the ore crushed, as it passes through the space 3, Figs. 1 and 5, between the tires 4 and 5 carried by the grinding drum 1 and auxiliary wheel 2, respectively.

This space 3 can be regulated at will, by the raising or lowering of the boxes 6, and as the dirt immediately comes in contact with the screens 7, it will quickly pass out of the mill, as soon as it becomes fine enough to pass through the screens. There will always be water enough in the lowerportion of the mill to wash the screens, so they will not clog; the amount of water which will remain in the mill will be preferably about four in'chesin the bottom and around the outer sides.

The drum 1 comprises sections 9 and 10, Fig. 1,,fix edly secured together by suitable fastening means, as bolts 11, which are passed through parallel flanges 12,

12, formed upon the sections of the drum 1. -The sec-v tion 10 of the drum is provided with a rib or bead 13, preferably annular in shape, which is adapted to be positioned-within a similarly constructed groove formed upon the section 9. The screens 7 are held in place upon each of the sections of the drum, 'bysuitable means, as blocks 14, which are preferably cast upon the sections. Each section of the drum is provided with comparatively large openings in its sides, for the purpose hereinafter specified. Each section is provided with a primary, annular flange 15 and with an auxiliary flange 16. The drum 1 is mounted-upon a frame 17 carried by the'beams 18, 18. The frame 17 is provided with substantially semi-cylindrical members 19, which form the bearing for the drum. The members 19 of the frame 17 engage the portion 20, constituting the hub,

L of the drum. Positioned within the frame 17 is the lower casing 8. The casing 8 is water tight, except at f the bottom where a discharge spout is located, and is 5 preferably constructed of sections riveted or otherwisefixedly secured together. The lower casing 8 is pro.- vided with a discharge spout 21 to discharge finished material and water. The primary flanges 15 of the drum 1 are positioned between the sides of the frame 17 and within the casing 8 for preventing dirt and liquid from'running onto the hub portion of the drum,

The .flanges 15 also serve to positively retain the removable, upper casing 22 in position upon'the drum 1 and the lower casing 8. Segmental bands 23 are positioned between the flanges of the drum and are removably secured, through the medium of horizontal extension 24, to the lower casing 8. Any suitable means a may be employed, as for instance, bolts 25, for securing the bands 23 in position. The auxiliary flanges 16 of the drum 1 engage the cut-out portions 26 formed upon the supporting frame 17.

Removably secured to the sides of the drum 1 are pulleys'27, 27. The pulleys 27 are preferably provided with integral extensions 28, preferably annular in shape, which engage thedrum 1 and assist in supporting said pulleys, thereby removing considerable strain off of the fastening means, as bolts 29, which are employed for securing the pulleys to the drum. The central opening in each of the pulleys 27 is of substantially the same dimensions as the openings in the side of the drum 1-. The bolts 25 and the bands 23 retain .the drum 1 in position upon the supporting frame, thereby preventing displacement of said drum while said bands are in position upon the supporting frame 17. Two driving pulleys are preferably employed for the 6. In a mechanism of the class described, the combination with a support, of a revoluble grinding drum carried by said support, said drum provided with a pair of annular flanges upon each side thereof, the inner flanges being of a greater radius than the outer flanges, a removable casing positioned upon said support and engaging said drum between said innerflanges, and a revoluble member positioned within said drum.

7. In a mechanism of the class described, the combination with a support, of a revoluble, primary wheel carried by said support, a shaft positioned within said primary wheel, an auxiliary wheel fixedly secured to said shaft, said auxiliary wheel comprising similarly constructed sections, and an inclosing'member positioned upon the outer edge of said section.

In testimony whereof I afiix my signature in presence of two witnesses.

EDGAR S. MOULTON.

Witnesses:

RAY STOUT, M. C. MOULTON. 

